1/*
2 * Copyright (C) 2006 Zack Rusin <zack@kde.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "EventHandler.h"
28
29#include "Clipboard.h"
30#include "FloatPoint.h"
31#include "FocusController.h"
32#include "Frame.h"
33#include "FrameView.h"
34#include "KeyboardEvent.h"
35#include "MouseEventWithHitTestResults.h"
36#include "NotImplemented.h"
37#include "Page.h"
38#include "PlatformKeyboardEvent.h"
39#include "PlatformWheelEvent.h"
40#include "RenderWidget.h"
41#include "Scrollbar.h"
42
43namespace WebCore {
44
45const double EventHandler::TextDragDelay = 0.0;
46
47bool EventHandler::tabsToAllFormControls(KeyboardEvent* event) const
48{
49    // We always allow tabs to all controls
50    return true;
51}
52
53void EventHandler::focusDocumentView()
54{
55    if (Page* page = m_frame->page())
56        page->focusController()->setFocusedFrame(m_frame);
57}
58
59bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults& event)
60{
61    // Figure out which view to send the event to.
62    RenderObject* target = event.targetNode() ? event.targetNode()->renderer() : 0;
63    if (!target || !target->isWidget())
64        return false;
65    return passMouseDownEventToWidget(toRenderWidget(target)->widget());
66}
67
68bool EventHandler::passWidgetMouseDownEventToWidget(RenderWidget* renderWidget)
69{
70    return passMouseDownEventToWidget(renderWidget->widget());
71}
72
73bool EventHandler::passMouseDownEventToWidget(Widget* widget)
74{
75    notImplemented();
76    return false;
77}
78
79bool EventHandler::eventActivatedView(const PlatformMouseEvent&) const
80{
81    //GTK+ activation is not necessarily tied to mouse events, so it may
82    //not make sense to implement this
83
84    notImplemented();
85    return false;
86}
87
88bool EventHandler::passWheelEventToWidget(const PlatformWheelEvent& event, Widget* widget)
89{
90    ASSERT(widget);
91    if (!widget->isFrameView())
92        return false;
93
94    return toFrameView(widget)->frame()->eventHandler()->handleWheelEvent(event);
95}
96
97PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const
98{
99    return Clipboard::createForDragAndDrop();
100}
101
102bool EventHandler::passMousePressEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
103{
104    subframe->eventHandler()->handleMousePressEvent(mev.event());
105    return true;
106}
107
108bool EventHandler::passMouseMoveEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe, HitTestResult* hoveredNode)
109{
110    subframe->eventHandler()->handleMouseMoveEvent(mev.event(), hoveredNode);
111    return true;
112}
113
114bool EventHandler::passMouseReleaseEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
115{
116    subframe->eventHandler()->handleMouseReleaseEvent(mev.event());
117    return true;
118}
119
120unsigned EventHandler::accessKeyModifiers()
121{
122    return PlatformEvent::AltKey;
123}
124
125// GTK+ must scroll horizontally if the mouse pointer is on top of the
126// horizontal scrollbar while scrolling with the wheel; we need to
127// add the deltas and ticks here so that this behavior is consistent
128// for styled scrollbars.
129bool EventHandler::shouldTurnVerticalTicksIntoHorizontal(const HitTestResult& result, const PlatformWheelEvent&) const
130{
131    return result.scrollbar() && result.scrollbar()->orientation() == HorizontalScrollbar;
132}
133
134}
135